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qg-cf14cdbc-ec is attached to to wrong bridge br-int
Please view http://bderzhavets.blogspot.ru/2014/10/forwarding-packet-from-br-int-to-br-ex.html

  1. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 qg-a9e0c15a-b6 20.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-12b39034-b3 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 qg-a9e0c15a-b6

qg-cf14cdbc-ec is attached to to wrong bridge br-int
Please view http://bderzhavets.blogspot.ru/2014/10/forwarding-packet-from-br-int-to-br-ex.htmlhttp://bderzhavets.blogspot.com/2014/10/forwarding-packet-from-br-int-to-br-ex.html

  1. 2. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    0.0.0.0         192.168.1.1     0.0.0.0              UG    0      0    0     qg-a9e0c15a-b6
    20.0.0.0        0.0.0.0            255.255.255.0   U     0      0   0    0   qr-12b39034-b3
    192.168.1.0     0.0.0.0         255.255.255.0   U     0      0     0  0 qg-a9e0c15a-b6
  2. qg-a9e0c15a-b6

qg-cf14cdbc-ec is attached to wrong bridge br-int
Please view http://bderzhavets.blogspot.com/2014/10/forwarding-packet-from-br-int-to-br-ex.html

2. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n
Kernel IP routing table
Destination     Gateway         Genmask        Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0             UG    0      0   0     qg-a9e0c15a-b6
20.0.0.0        0.0.0.0            255.255.255.0   U     0      0   0      qr-12b39034-b3
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0     0    qg-a9e0c15a-b6

qg-cf14cdbc-ec is attached to wrong bridge br-int
Please view http://bderzhavets.blogspot.com/2014/10/forwarding-packet-from-br-int-to-br-ex.html

2. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n
Kernel IP routing table
Destination     Gateway         Genmask       Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0            UG    0      0   0     qg-a9e0c15a-b6
20.0.0.0        0.0.0.0            255.255.255.0   U     0      0   0      qr-12b39034-b3
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0     0    qg-a9e0c15a-b6

Please , run

phoenix:~ # ip netns exec qrouter-24ab9088-6283-4053-a78f-61feb56d4e63 route -n

qg-cf14cdbc-ec is attached to wrong bridge br-int
Please view View : Forwarding packet from br-int to br-ex on Neutron Node
http://bderzhavets.blogspot.com/2014/10/forwarding-packet-from-br-int-to-br-ex.html

2. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n
Kernel IP routing table
Destination     Gateway         Genmask       Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0            UG    0      0   0     qg-a9e0c15a-b6
20.0.0.0        0.0.0.0            255.255.255.0   U     0      0   0      qr-12b39034-b3
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0     0    qg-a9e0c15a-b6

Please , run

phoenix:~ # ip netns exec qrouter-24ab9088-6283-4053-a78f-61feb56d4e63 route -n

Recreate router && external network

qg-cf14cdbc-ec is attached to wrong bridge br-int
View : Forwarding packet from br-int to br-ex on Neutron Node
http://bderzhavets.blogspot.com/2014/10/forwarding-packet-from-br-int-to-br-ex.html

2. [root@controller ~(keystone_admin)]# ip netns exec qrouter-db10bdfd-f0c6-4c30-8a08-30ceb132a979 route -n
Kernel IP routing table
Destination     Gateway         Genmask       Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0            UG    0      0   0     qg-a9e0c15a-b6
20.0.0.0        0.0.0.0            255.255.255.0   U     0      0   0      qr-12b39034-b3
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0     0    qg-a9e0c15a-b6

Please , run

phoenix:~ # ip netns exec qrouter-24ab9088-6283-4053-a78f-61feb56d4e63 route -n

Recreate router && external network
Neutron instructions for IceHouse were correct, it just means neutron configuration error has been fixed.